| 2355439 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 262 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 184 / 280 |
Estimated T-Level: 23.3 ⓘ TF below 2^72 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Murase Yoshiyuki | 0D231A9CDC0657C0 | 0 | Windows,Prime95,v11,(aka WC) | | Factored | 1999-03-26 | Phil Brett | 0D231A9CDC0657C0 | 1997121 | Windows,Prime95,v17,(aka WT1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2017-10-12 | Oliver Kruse | D5BF2680A93D718C | 1 | 0 | 1 | 3 | | Verified | PRP without proof (not generated) | 2017-11-24 | storm5510 | D5BF2680A93D718C | 1 | 1090327 | 1 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2018-04-27 | alpertron | NF-PM1 | B1=2000000, B2=60000000, E=12 | | 2017-11-24 | storm5510 | C-PRP | M2355439/4307356240271999134526497 : D5BF2680A93D718C | | 2017-10-12 | Oliver Kruse | C-PRP | M2355439/4307356240271999134526497 : D5BF2680A93D718C | | 2011-01-23 | Oscar Östlin | F-PM1 | Factor: 4307356240271999134526497 | | 2010-12-04 | Oscar Östlin | NF-PM1 | B1=75011 | | 2010-11-04 | Joss | NF-PM1 | B1=20000 | | 2009-01-15 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-09-21 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1999-03-26 | -anonymous- | C-LL | 0D231A9CDC0657C0 |
|
